Acetylene-torch.



ORIE N. CRISPELL, F OLIVEBBIDGE, NEW YQRK.

ACETYLENE-TORCH'.

aeiivia.-

To all whom t may concern.'

4'Re it known that I, ORIE N. CRisrELL, a citizen of the, United States, residing at ,'Olivebridge, in the county of Ulster and State of New York, have invented certain new and useful Improvements in Acetylene- Torches; and I do. hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appery tains to make and use the same.

QThe present invention relates to improve- "ments in acetylene torches, and the primary object thereof is to provide an improved "acetylene torch which .will be of simple, vcompact and cheap construction, at the y same time aifording an increased eificiency of the mixture of the gases over present type torches tested by applicant.

Another object of my invention is to providean improved acetylene torch in which back firing will be less likelyvto occur, and

iiiwhich there will be but a single joint,

.with the result of minimizing the amount of leakage of the gases..

A"In the dccompanying drawings forming a j part of this application, and in which similar reference symbols indicate correspond- "lling parts in the several views: t

Figure 1 is a side elevational view of an e, acetylene torch constructed in accordance with the present invention.

"l Fig. 2 is a longitudinal sectional view 'i "thr'oughsaid torch.

3`5'f1j'Fig. 3 is a top .plan View of the improved *torchwith the supply Ipipes shown broken away.

i i Fig. 4 is a transversesectional view taken onthe line of Fig. 2. f'aFig. 5 isa similar View taken 0n the line '"5 5 in Figb2; and

' f-"f .FigG is a cross sectional view similar to ig. 4 but illustrating la slight modification. 5` In the drawings is shown one embodi- 45` inept, together ywith a slight modification, of hich 'my improved torch isjsusceptible, and

ii'vention as applied to a welding nozzle 1,

5i); may beequally well adapted for construction and use in connection with cutting nozles.r

The nozzle 1 is-traversed by a bore2 Specification of Letters Patent.

,hile'in this embodiment have shown thel twill be .understood that the improvement -acetylene are directed yagainst the work in Patented Apr. 2, 1918.

Application led May 5, 1917. Serial No. 166,685. i i

the usual manner; -this bore 2, as disclosed to advantage in Fig. 2, running'intoand communicating with a conical ldepression 3 in the torch headl4. This conical depression 3 constitutes a final mixing. chamber, j

in whichthe oxygen and acetylene arev introduced in their passage to the bore `2 of the nozzle 1.

The inner end ofthe nozzle lforms .a

conicfrustum, as shown at 5, of smaller di-` mensions than theV depression 3; which de# pression 3 and frustum coperate together inthe formation lof the iinal mixing chamber, to which the gases are admitted through a flaring passage 6 formed between the twoconical walls.

Adjoining the base of theconic frustum ,5, the inner end of the nozzle. 1 is lprovided with an annular channel7, which4 is, in effeet, a preliminary mixing chamber. .andy

which is in connection at one side with the Haring passage 6, and at its outer siderespectively, with admission ducts 8 and 9. rllhe duct 8 ciommunicateswithr an` oxygen space 16 in the head 4, which is supplied -as by a pipe 10 from a suitable source,`andA y,or-

dinarily a single duct 8 suiiices for the introduction of a proper quantity' of Aoxygen gas. The ducts 9, however,.aie supplied in a greater number,A preferably four, as illus; trated in Fig. 4, and theseducts 9 connect the annular channel 7 with anvvacetylene space 11 at the opposite side of the head 4,

-and which space 11 is supplied from A,a convenient source of acetylene bya pipe,12.y

It will` be apparent, uponl an inspection of Fig. 2, that the outer side of Vthe ,annular channel 7 does not completely register with the ducts 8 and 9, and such ducts ,8 and 9 are partially inasked'by an annular flange. 18

on-the nozzle 1, which constitutes a metering ring. This flange 13 occupies a-seat I 14 on the adjacent end of the headf4, and is removably held therein as by a shouldered nut 15. found in my improved device.`

In Fig. 6 the modification consists in uniting `all ofthe ducts 9 shown in Fig. 4,-into a single continuous arcuate slot 9'., which communicates with the acetylene space, and

whichv conveys the acetylene into the annu' rlliis forms the only joint to` be lar channel 7 in the same manner and with substantially the same result as is obtained by the plurality of ducts 9. In this modification also, an elongated duct 8 takes the place of the circular duct S with substantially the same functions.

In operation, oxygenenters through the pipe 10 to the space 16 in the head e, while at the same time acetylene is admitt d through the pipe 12 to its space 11. FromY the space 16 the oxygen passes through the duct 8 and into the annular channel 7, where it encounters the acetylene which has access to this annular channel 7 through the ducts 9 or the slot 9', as the case may be.

In the annular channel Z the oxygen and acetylene receive a whirling motion by virtue of the shape of this channel, and which assists to promote an intimate mixture of thesetwo gases. The quantity of acetylene admitted to the annular channel 7 or primary mixing chamber is, of course, substantially equalto the oxygen admitted thereto, as is provided for by the increased number of ducts 9 or the greater area of the slot 9, and is necessary for obtaining the proper admixture to give the required combustion and heat at the mouth of the nozzle 1.

The quantities in which the two gases arel admitted to the annular channel. 7 is regulated by the metering lring 13 and the cross sectional area of said channel 7.

Several nozzles may be utilized in conjunction with a single head 4, which have these parts 13 and 7 of varying proportions,

so that that nozzle may be employed which f gives the required quantity of the admixed combustible.

After theirpreliminary mixing in the annular channel 7 the combined gases escape through the flaring passage 6, and enter the depression 3 in which the gases are continuously commingled and receive their final mixture, after which they pass out through the port 2 of the nozzle 1 and are ignited.

In con-sequence of the constricted outlet afforded by lthe flaring passage 6, there will arise a back pressure-.of the gases in the prelimina'ry chamber 7 such as tocause the' oxygen and acetylene to more thoroughly min- `le. g It will be understood that, by reason of the specific construction and location of the gas passages, the oxygen and acetylene will be quickly and thoroughly mixed, and after mixture will be quickly discharged through the port 2 of the nozzle 1, whereby the liability to back lire will be reduced to a minimum; and owing to the single joint in the device, which may be made exceedingly tight by the nut 15, there will be little likelihood of the gases escaping between the head and nozzle, which is a common cause of trouble in torches as now found in use.

It is obvious that those skilled in the art Vmay vary the details of construction and arrangements of parts without departing from the spirit of my invention, and therefore I do lnot wish to be limited to such features except as may be required by the claims.

I claim:

1. A torch of the character described Vcomprising a bored nozzle, a flange on said noz,-

zle, an annular preliminary mixing chamber therein, a head-having gas spacesand ducts connecting the gas spaces with said chamber,

said head also having a depression opposite cal end, a flange on said nozzle, an annular preliminary mixing chamber therein, a head havinggas spaces' andpassa'ges connecting the gas spaces with said chambensaid head also having a conical depression opposite said frusto-conical end whereby to provide vtherewith a final mixing chamber in connection with said first-named chamber, and means engaging said flange and liead for securing the nozzle to the latter, substantially as described.

3. A torch of the character described comprising a nozzle having a frusto-conical end, a head having a conical depression into whichsaid end lits and forms therewith a final mixing chamber, a preliminary mixingA chamber, said head having gas -spaces and ducts connecting the spaces with said preliminary mixing chamber, a metering device lfor regulating the flow through said ducts to said preliminary chamber, aflangeon said nozzlertand means engaging said flange and head to secure the nozzle to the latter, substantially as described.

4. A torch including a head having gas spaces-with ducts leading therefromv and a conical depression therein, a nozzle provided with a'frusto-conical end fitted into said depression and forming therewith a final mixing chamber, a flange on said nozzle, an annular preliminary mixing chamber in said fiange in communication with said ducts, a metering ring formed by One wall of said preliminary mixing chamber to regulate the flow thereinto, and a flaring passage establishing communication between said preliminary and final mixing chamber, substantially as described.

5. A torch as described including'a li'ead having gas spaces with connections to 'deliver oxygen and acetylene and ducts leading from said spaces, the area of the ducts being greater for the acetylene than the oxygen, said head alsohaving a seat and a conical depression, a nozzle having a frustoconical end fitted into said depression and providing a iinal mixing chamber there- 5 with, a flange on said nozzle occupying said seat, an annular preliminary mixing chamber in said flange in communication With said ducts, a metering ring formed by the Wall of said'chamber for regulating the flow thereinto, and a shouldered nut engaging 10 said flange for attaching the nozzle and head together, substantially as described. In testimony whereof, I aiix my signature. ORIE N'. CRISPELL. 

